公开(公告)号：US5231669A

公开(公告)日：1993-07-27

申请号：US375303

申请日：1989-07-03

申请人： Claude Galand ,  Michele Rosso

发明人： Claude Galand ,  Michele Rosso

IPC分类号： G06F3/16 ,  G10L19/06 ,  H03M1/12 ,  H03M7/30 ,  H04B14/04 ,  H04Q1/457

CPC分类号： G10L19/06

摘要： In a voice coding system, the baseband or residual signal is encoded at a lower rate by finding a best estimate at a lower rate. The voice terminal signal x(n) is split into a low-pass filtered band signal y1(n) and a high-pass filtered band signal y2(n). Both y1(n) and y2(n) signals are coded into lower-rate sub-sequences of samples x1(n), x2(n) and x3(n), x4(n) respectively. The sequence of samples to be representative of x(n) is selected among x1(n), x2(n), x3(n) and x4(n) for being the closest to x(n).

公开(公告)号：US5093863A

公开(公告)日：1992-03-03

申请号：US505732

申请日：1990-04-06

申请人： Claude Galand ,  Michele Rosso

发明人： Claude Galand ,  Michele Rosso

IPC分类号： G10L11/04 ,  G10L19/08

CPC分类号： G10L25/90 ,  G10L19/09

摘要： A process for deriving voice pitch related delay values M to tune a Long-Term Prediction (LTP) filter to be used in an LTP based speech coder converting a speech derived digital signal r(n) into a lower bit rate signal, said filter being provided with a variable length delay line y(n) fed with a reconstructed signal r'(n). The process includes splitting r(n) into segments and each segment into sub-segments; then cross-correlating the first current r(n) sub-segment with a previously reconstructed segment and sorting the cross-correlation values for peak location, whereby a first delay value M1 is derived and used to tune the filter. Then, said M1 is used to compute sample indexes n for a predefined number of samples located about M1/p, . . . , M1, 2M1, . . . , pM1 and repeating cross-correlation and sorting operations to derive M2 and so on up to a full segment length (e.g. 160 samples). Then the process is started all over again.

摘要翻译： 一种用于导出语音音调相关延迟值M以调整要在基于LTP的语音编码器中使用的长期预测（LTP）滤波器以将语音导出数字信号r（n）转换为较低比特率信号的过程，所述滤波器是 具有馈送有重建信号r'（n）的可变长度延迟线y（n）。 该过程包括将r（n）分成段和每个段分成子段; 然后将第一当前r（n）子段与先前重构的段进行交叉相关，并且对峰值位置的互相关值进行排序，由此导出第一延迟值M1并用于调谐滤波器。 然后，所述M1用于计算样本索引n，该样本索引位于约M1 / p附近的预定数量的样本。 。 。 ，M1，2M1，。 。 。 ，pM1和重复的互相关和排序操作以导出M2等等达到全段长度（例如160个样本）。 然后再重新开始该过程。

公开(公告)号：US5073938A

公开(公告)日：1991-12-17

申请号：US423732

申请日：1989-10-17

申请人： Claude Galand

发明人： Claude Galand

IPC分类号： G10L21/04

CPC分类号： G10L21/04

摘要： The process for varying the speed of a speech signal that involves splitting at least a portion of the speech frequency bandwidth into N narrow sub-bands, processing each sub-hand signal contents to derive therefrom magnitude data M(i, n) and phase data P(i, n), i=1, . . . , N being the subband index and n the time index. The M (i, n) sequence is converted into a sequence M'(n) by either duplicating one sample every K samples (K being an integer value derived from the desired slowing-down/speeding up ratio). The phase sequence P (i, n) is processed to derive therefrom an increment sequence D(i, n)=P(i, n)-P(i, n-1), which increment sequence is first converted into a D'(i, n) sequence by either dropping or duplicating one sample every K, samples, before being converted into P'(i, n)=P'(i, n)+D'(i, n). The P'(i, n), D'(i, n) sequences are converted back into sub-band signals contents, then combined together into the slowed-down/speeded-up speech signal.

公开(公告)号：US4924508A

公开(公告)日：1990-05-08

申请号：US155459

申请日：1988-02-12

申请人： Hubert Crepy ,  Philippe Elie ,  Claude Galand ,  Emmanuel Lancon ,  Thierry Liethoudt ,  Michele Rosso

发明人： Hubert Crepy ,  Philippe Elie ,  Claude Galand ,  Emmanuel Lancon ,  Thierry Liethoudt ,  Michele Rosso

IPC分类号： G01H3/04 ,  G10L19/08

CPC分类号： G10L19/08 ,  G10L25/90

摘要： A pitch detector to adjust long term prediction in a pulse excitation speech coder. A residual signal r(n) is first derived from the speech signal s(n) by short term filtering. Then, r(n) is processed to calculate a prediction error signal e(n) which is subsequently pulse excitation encoded. The processing of e(n) entails prediction of a residual by measuring a pitch related factor M, employing two steps. First calculating a coarse M value through peak clipping and sign transition detection, and then adjusting the M value by autocorrelation--calculations about the roughly spaced peaks.

公开(公告)号：US4764955A

公开(公告)日：1988-08-16

申请号：US919724

申请日：1986-10-16

申请人： Claude Galand ,  Guy Platel

发明人： Claude Galand ,  Guy Platel

IPC分类号： H04B3/23

CPC分类号： H04B3/23

摘要： In a voice transmission network having an echo canceler including a flat delay line in series with an adaptive digital filter, a process is provided for adjusting the flat delay line length, thus enabling limiting the filter length to minimal value. The method is based on intercorrelation operations. It includes first intercorrelating sequences of energy values of blocks or consecutive samples, to derive a rough flat delay estimation therefrom; then intercorrelating sequences of signal samples with one of the sequences being roughly delayed, to derive therefrom an accurate flat delay estimation.

摘要翻译： 在具有包括与自适应数字滤波器串联的平坦延迟线的回波消除器的语音传输网络中，提供了一种用于调整平面延迟线长度的过程，从而能够将滤波器长度限制到最小值。 该方法基于互相关操作。 它包括块或连续样本的能量值的第一相互关联序列，以从其导出粗略的平坦延迟估计; 那么信号样本的相关序列与其中一个序列被大致延迟，从而得到精确的平坦延迟估计。

公开(公告)号：US4672669A

公开(公告)日：1987-06-09

申请号：US616021

申请日：1984-05-31

申请人： Andre DesBlache ,  Claude Galand ,  Robert Vermot-Gauchy

发明人： Andre DesBlache ,  Claude Galand ,  Robert Vermot-Gauchy

IPC分类号： G10L11/02 ,  H04J3/16 ,  H04J3/17 ,  G10L5/00

CPC分类号： G10L25/78 ,  H04J3/1688 ,  H04J3/175

摘要： Speech signal presence is detected in a VAD (Voice Activity Detector) in two steps: (1) Signal energy above a threshold decides presence, below threshold decides ambiguity; (2) ambiguity is resolved by testing the rate of change of spectral parameters.

摘要翻译： 在VAD（语音活动检测器）中检测到语音信号存在两个步骤：（1）高于阈值的信号能量决定存在，低于阈值决定歧义; （2）通过测试光谱参数的变化率来解决歧义。

公开(公告)号：US4479213A

公开(公告)日：1984-10-23

申请号：US399935

申请日：1982-07-19

申请人： Claude Galand ,  Henri Nussbaumer

发明人： Claude Galand ,  Henri Nussbaumer

IPC分类号： G10L19/02 ,  H03M7/30 ,  H04B1/66 ,  H04B14/04 ,  H04J99/00 ,  H04M11/00 ,  H04M11/06 ,  H04J3/00

CPC分类号： H04M11/062 ,  H04B1/667

摘要： The method allows voice and data information to be concentrated over a reduced number of telephone lines. It consists mainly in processing each voice signal to extract therefrom a so-called analog base band signal and digitally coded characteristic parameters. Said parameters are then multiplexed with pure data and submitted to a modulation operation. The analog signal resulting from the modulation is then added to the base band before being transmitted over a telephone line.

摘要翻译： 该方法允许语音和数据信息集中在减少数量的电话线上。 它主要在于处理每个语音信号以从中提取所谓的模拟基带信号和数字编码的特征参数。 所述参数然后与纯数据复用并提交到调制操作。 然后，在通过电话线传输之前，将由调制产生的模拟信号添加到基带。

公开(公告)号：US07574738B2

公开(公告)日：2009-08-11

申请号：US10288574

申请日：2002-11-06

申请人： Olivier Daude ,  Jacques Fieschi ,  Claude Galand ,  Olivier Hericourt ,  Jean-Francois Le Pennec

发明人： Olivier Daude ,  Jacques Fieschi ,  Claude Galand ,  Olivier Hericourt ,  Jean-Francois Le Pennec

IPC分类号： G06F15/16

CPC分类号： H04L12/4641 ,  H04L63/0236 ,  H04L63/0254 ,  H04L63/0263 ,  H04L63/0272 ,  H04L63/0281 ,  H04L63/08 ,  H04L63/0823 ,  H04L63/083 ,  H04L63/0869 ,  H04L63/101 ,  H04L63/20

摘要： A method and system for enabling interconnection of VPNs is disclosed. An interconnection device manages an interconnection process at one or more facilities including, for example, a gateway device. The gateway device has information relating to a plurality of VPNs, and may facilitate interconnection between devices on at least two of the VPNs by determining that one device is in fact a member of a first one of the VPNs, and by forwarding connection parameters of the first VPN to the second VPN on an as-needed basis. In this way, the gateway allows interconnection without the need for a completely centralized decision-making process, and does so independently of the type of device and/or VPN(s) being used. Moreover, the gateway may implement only those VPN parameters needed by both VPNs to communicate with one another with a desired level of security, thereby simplifying the routing and forwarding processes associated with the actual communication occurring via the interconnection. The information related to the plurality of VPNs and their respective member devices may be stored in a mapping table at the gateway, and identification parameters of a device seeking interconnection and/or associated VPN parameters may be verified by the use of digital certificates.

摘要翻译： 公开了一种实现VPN互连的方法和系统。 互连设备管理包括例如网关设备在内的一个或多个设施的互连处理。 网关设备具有与多个VPN相关的信息，并且可以通过确定一个设备实际上是VPN中的第一个的成员，并且通过转发所述VPN中的第一个VPN的连接参数来促进至少两个VPN中的设备之间的互连 第一个VPN到第二个VPN根据需要。 以这种方式，网关允许互连，而不需要完全集中的决策过程，并且独立于正在使用的设备和/或VPN的类型。 此外，网关可以仅实现两个VPN所需的VPN参数，以便以期望的安全级别彼此通信，从而简化与通过互连发生的实际通信相关联的路由和转发过程。 与多个VPN及其各自的成员设备相关的信息可以存储在网关的映射表中，并且可以通过使用数字证书来验证寻求互连和/或相关VPN参数的设备的识别参数。

公开(公告)号：US07562386B2

公开(公告)日：2009-07-14

申请号：US11703021

申请日：2007-02-06

申请人： Joel Balissat ,  Claude Galand ,  Jean-Francois Le Pennec ,  Jean-Marie Sommerlatt

发明人： Joel Balissat ,  Claude Galand ,  Jean-Francois Le Pennec ,  Jean-Marie Sommerlatt

IPC分类号： G06F15/00

CPC分类号： H04L63/0272 ,  H04L63/065 ,  H04L63/08 ,  H04L63/164

摘要： A method and system for implementing secure communications between a plurality of devices are provided. The method and system generally include the provision of at least one common encryption parameter to each of the plurality of devices, as well as an identification of the plurality of devices to one another. This information can be maintained and shared by interaction of the plurality of devices with a designated server device. In this way, a secure, point-to-point connection between at least two of the plurality of devices can be established.

摘要翻译： 提供了用于实现多个设备之间的安全通信的方法和系统。 该方法和系统通常包括向多个设备中的每一个提供至少一个公共加密参数，以及将多个设备彼此的标识。 可以通过多个设备与指定的服务器设备的交互来维护和共享该信息。 以这种方式，可以建立多个设备中的至少两个之间的安全的点对点连接。

公开(公告)号：US07448081B2

公开(公告)日：2008-11-04

申请号：US11525399

申请日：2006-09-22

申请人： Joel Balissat ,  Claude Galand ,  Jean-Francois Le Pennec ,  Jean-Marie Sommerlatt

发明人： Joel Balissat ,  Claude Galand ,  Jean-Francois Le Pennec ,  Jean-Marie Sommerlatt

IPC分类号： G06F15/00

CPC分类号： H04L63/0209 ,  H04L63/0272 ,  H04L63/0435 ,  H04L63/0464

摘要： A method and system for implementing secure network communications between a first device and a second device, at least one of the devices communicating with the other device via a firewall device, are provided. The method and system may include obtaining an encryption parameter that is shared by the first device, second device and firewall device. A data packet sent by the first device may then be copied within the firewall device, so that decryption of the copy of the data packet within a portion of the firewall device may take place. In particular, the portion of the firewall device in which decryption takes place is defined such that contents of the portion are inaccessible to an operator of the firewall device. Thus, scanning of the decrypted copy of the data packet for compliance with a predetermined criterion may take place within the firewall device, without an operator of the firewall device having access to the contents of the data packet to be transmitted. Thereafter, the original data packet can be forwarded to its originally intended recipient.

摘要翻译： 提供了一种用于在第一设备和第二设备之间实现安全网络通信的方法和系统，至少一个设备经由防火墙设备与另一设备通信。 该方法和系统可以包括获得由第一设备，第二设备和防火墙设备共享的加密参数。 然后可以在防火墙设备内复制由第一设备发送的数据分组，从而可以在防火墙设备的一部分内对数据分组的副本进行解密。 特别地，定义防火墙设备中发生解密的部分，使得该部分的内容对于防火墙设备的操作者是不可访问的。 因此，在防火墙设备内可以进行符合预定标准的数据分组的解密副本的扫描，而防火墙设备的操作者可以访问要发送的数据分组的内容。 此后，可以将原始数据分组转发到其原始的接收者。